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Word of the Day Tuesday, June 9, 2026

infiltration

/ɪnˈfɪltreɪʃən/ noun · British & US
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What does infiltration mean?

noun

The act of infiltrating, or the state of being infiltrated. The process of secretly entering or spreading into an organization, system, or area.

Example

"The spy's infiltration of the enemy's headquarters was a major success."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for infiltration

Antonyms of infiltration

Rhymes with infiltration

Etymologically related